male mating behavior

sexual behavior of males

evolved to bring gametes together

two phases of sexual behavior

appetivtive and consummatory

appetitive

behvaiors used to grain access to females

consummatory behavior

copultion and fertilization occurs

onset of sexual behavior begins when

puberty causes a rise in androgens

•Androgens change ________ that a particular behavior will be exhibited within a particular context

probability

what are the three components to male consummatory behavior

mounting, intromission, ejaculation

response variables of male sex behavior

IMI and PEI

what are some examples of obstruction tests for motivation of sex drive

crossing electrified grid, treadmill, ladder, bar pressing

castration reduces sexaul behavior while andorgen admin

restores it

restoration of sexual behvaior often

appears in reverse order of loss

aromatization appears to

be crucial

T anndrostenedione and E2 are effective but

DHT is ineffective

preoptic area

critical integrative area

lessions to the preoptic area affect

mount performance but not sexual motivation a

incubation temperature affects

behavior in females

What are the two olfactory systems

main olfactory bulb and the accessory olfactory bulb

the vomeronasal organ projects to

the Accessory olfactory bulb

amygdala

two regions that affect both motivation and function

lesioning the amygdala can

completely abolish copulatory behavior

main olfactory system

projects to what has been termed the ‘conscious brain’

accessory olfactory system

projects to medial amygdala and then to key areas mediating sexual behavior

E2 implants are more effective than

DHT in restoring male behavior

the importance of the vomeronasal organ

varies across species

chemosensory cues may interact with

hormonal cues or require hormonal stimulation to be effective

contralateral bulbectomy

olfactory bulb removed on side opposite where hormonal implant is places so there IS CONVERGENCE of olfactory and hormonal information

sites of fos induction in rat brain follow a

very broad pattern of cellular activation

Microdialysis small-scale sampling from region putatively involved in behavior can

reveal changes in neurotransmitter release under differing behavioral and hormonal conditions

What is the major effect of POA lesions

destroying dopaminergic neurons

estradiol enables dopamine release while

DHT does not

5-HT in lateral hypothalamic area blocks

dopamine release in nucleus accumbens

more than one form of

ER exist in all verberates